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"Nanokomposit TiO2/CuO dengan variasi rasio Cu/Ti disusun menggunakan metode sol-gel. Sampel komposit dikarakterisasi dengan X-Ray Diffraction, Energy Dispersive X-Ray Spectroscopy, Field Emission Scaning, Brunauer-Emmett-Teller, UV-Visible Diffuse Reflectance Spectroscopy dan Electronic Spin Resonance Spectroscopy. Methylene blue digunakan sebagai model pewarna tekstil untuk mengevaluasi fotokatalitik, sonokatalitik dan fotosonokatalitik. Difraksi sinar-X dan dispersif energi analisis X-ray menegaskan bahwa hanya struktur monoklinik CuO dan struktur anatase TiO2 yang muncul di nanokomposit TiO2/CuO. Degradasi methylene blue menunjukkan bahwa penggabungan CuO di nanokomposit TiO2/CuO menunjukkan aktivitas fotokatalitik yang cukup tinggi, dan energi cahaya yang dapat dimanfaatkan lebih banyak dibandingkan TiO2 murni. Selain itu, degradasi methylene blue juga diselidiki menggunakan sistem sonokatalisis dan sistem fotosonokatalisis. Hasil penelitian menunjukkan bahwa semua data eksperimen mengikuti model pseudo-first order tapi laju konstanta fotosonokatalisis lebih tinggi dari proses fotokatalisis dan sonokatalisis individu masing-masing. Selain itu, kegiatan fotokatalitik, sonokatalitik dan fotosonokatalitik akan berkaitan dengan sifat struktural dan optik sampel. Mekanisme kegiatan katalitik akan dibahas.

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TiO2/CuO nanocomposite with different Cu/Ti ratios were prepared using sol-gel method. The obtained composite samples were characterized with X-Ray Diffraction, Energy Dispersive X-Ray Spectroscopy, Field Emission Scaning, Brunauer-Emmett-Teller, UV-Visible Diffuse Reflectance Spectroscopy and Electronic Spin Resonance Spectroscopy. Methylene blue was used as a model of textile dye to evaluate their photocatalytic, sonocatalytic and photosonocatalytic activities. X-ray diffraction and energy dispersive X-ray analysis confirmed that only monoclinic CuO and anatase TiO2 structures are present in TiO2/CuO nanocomposites. The degradation of methylene blue indicated that the incorporation of CuO in TiO2/CuO nanocomposite exhibited an appreciable higher photocatalytic activity, and more light energy could be utilized than pure TiO2. In addition, the degradation of methylene blue was also investigated using sonocatalysis and photosonocatalysis systems.

The results showed that all experimental data followed the pseudo-first order model but the rate constant of the sonophotocatalysis is higher than the respective individual photocatalysis and sonocatalysis process. Furthermore, the photocatalytic, sonocatalytic and photosonocatalytic activities will be related to their structural and optical properties. The mechanism of catalytic activities will be discussed."

"Nanokomposit ZnO/CuO dengan lima variasi molar ZnO:CuO (1:3, 1:1, 1:0.5, 1:0.3, dan 1:0.1) telah disintesis dengan menggunakan metode sol-gel. Pengukuran X-ray Diffraction (XRD), Energy Dispersive X-Ray (EDX), Field Emission Scanning Electron Microscopy (FESEM), nitrogen adsorption spectroscopy, Electron Spin Resonance (ESR), dan UV-Visible spectroscopy dilakukan untuk mengindentifikasi struktur, morfologi, luas permukaan, resonansi ion-ion, dan nilai celah energi dari nanokomposit. Aktivitas katalitik dari nanokomposit ZnO/CuO diuji dibawah pemaparan cahaya visible, ultraviolet, ultrasonik, dan gabungan antara visible/UV dengan ultrasonik dalam mendegradasi larutan pewarna methylene blue (MB). Hasil aktivitas katalitik dari nanokomposit ZnO/CuO menunjukkan aktivitas photosonocatalytic mempunyai performa lebih baik dibandingkan aktivitas photocatalytic dan sonocatalytic. Penambahan beberapa scavenger menunjukkan hole merupakan spesies aktif yang berperan paling penting dalam mekanisme katalitik.

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ZnO/CuO nanocomposites with five different ZnO:CuO ratios (1:3, 1:1, 1:0.5, 1:0.3 and 1:0.1) were prepared using sol-gel method. X-ray Diffraction (XRD), Energy Dispersive X-Ray (EDX), Field Emission Scanning Electron Microscopy (FESEM), nitrogen adsorption spectroscopy, Electron Spin Resonance (ESR) and UV-Visible spectroscopy were employed to investigate the structural, morphology, surface area, ions resonance and energy band gap of nanocomposites. The catalytic activity of ZnO/CuO nanocomposites were tested under visible light, ultraviolet light, ultrasound irradiation and the combination of visible/UV light with ultrasound irradiation on the degradation of methylene blue (MB) aqueous solution. The observed catalytic activity of nanocomposites shows that photosonocatalytic has better performance than photocatalytic and sonocatalytic activity. The addition of scavengers suggested that holes are the most important active species in the catalytic mechanism."

"Metilen biru merupakan pewarna organik berbahaya dari limbah industri tekstil yang menyebabkan permasalahan lingkungan yang serius. Degradasi metilen biru dapat dilakukan melalui proses fotokatalisis dengan semikonduktor berbasis oksida logam seperti NiO dan CuBi2O4. Pada penelitian ini, NiO disintesis melalui metode sol-gel, sedangkan CuBi2O4 disintesis melalui metode solvotermal. Nanokomposit NiO/CuBi2O4 telah berhasil dikembangkan dengan memodifikasi NiO dan CuBi2O4 melalui metode grinding-annealing, yang dikonfirmasi oleh hasil karakterisasi XRD, FTIR, TEM, dan UV-Vis DRS. Penurunan nilai energi celah pita NiO dari 3,39 eV akibat keberadaan CuBi2O4 dapat diamati. Energi celah pita NiO pada NiO/CuBi2O4 1:1, 1:2, dan 2:1 yang diperoleh dari hasil karakterisasi UV-Vis DRS adalah 2,95 eV, 2,89 eV, dan 3,15 eV. Selain itu, aktivitas fotokatalitik NiO, CuBi2O4, dan NiO/CuBi2O4 sebagai katalis juga dievaluasi melalui degradasi metilen biru di bawah radiasi sinar tampak selama 3 jam. Hasil menunjukkan bahwa modifikasi NiO dengan CuBi2O4 dapat meningkatkan aktivitas fotokatalitik. Persentase fotodegradasi metilen biru dengan 10 mg katalis NiO/CuBi2O4 2:1 adalah 74,12% dengan konstanta laju sebesar 6,07×10–3 menit–1, yang lebih tinggi dibandingkan NiO dan CuBi2O4 tanpa modifikasi

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Methylene blue is a hazardous organic dye from textile industrial effluents which causes serious environmental problems. Degradation of methylene blue could be carried out through photocatalysis process using metal oxide-based semiconductors such as NiO and CuBi2O4. In this study, NiO was synthesized by sol-gel method, while CuBi2O4 was synthesized by solvothermal method. NiO/CuBi2O4 nanocomposite was successfully developed by modifying NiO and CuBi2O4 through grinding-annealing method, which was confirmed by the results of XRD, FTIR, TEM, and UV-Vis DRS characterization. The decrease in bandgap energy value of NiO from 3.39 eV due to the presence of CuBi2O4 could be observed. The bandgap energies of NiO in NiO/CuBi2O4 1:1, 1:2, and 2:1 obtained from the results of UV-Vis DRS characterization were 2.95 eV, 2.89 eV, and 3.15 eV. Furthermore, the photocatalytic activity of NiO, CuBi2O4, and NiO/CuBi2O4 as catalysts were also evaluated by methylene blue degradation under visible light irradiation for 3 hours. The results showed that modification NiO with CuBi2O4 could enhance the photocatalytic activity. The percentage of methylene blue photodegradation using 10 mg NiO/CuBi2O4 2:1 catalyst was 74.12% with a rate constant of 6.07×10–3 min–1, which was higher than NiO and CuBi2O4 without modification."

"Pewarna sintesis merupakan salah satu bahan pencemar lingkungan perairan karena sifatnya yang sulit terurai dan persisten sehingga dapat menghambat penetrasi cahaya matahari masuk ke dalam air dan menyebabkan penurunan aktivitas fotosintesis. Fotokatalitik dilakukan untuk mendegradasi pewarna sintesis dengan menggunakan CuBi2O4 yang memiliki energi celah pita sebesar 1.75 eV. Namun, rekombinasi pasangan e-/h+ pada CuBi2O4 dapat terjadi akibat celah pita yang sempit serta karena memiliki sifat mobilitas pembawa muatan yang buruk. Untuk mengurangi rekombinasi pasangan e-/h+ pada CuBi2O4 ditambahkan Ag sehingga efisiensi degradasi fotokatalitik meningkat. CuBi2O4 disintesis melalui metode solvotermal sedangkan Ag/CuBi2O4 disintesis melalui metode presipitasi-reduksi dengan rasio mol prekursor Ag:CuBi2O4 (1:1), (2:1), dan (1:2). Hasil sintesis CuBi2O4 dan nanokomposit Ag/CuBi2O4 dikarakterisasi dengan XRD, TEM, FTIR, dan Spektroskopi UV-Vis DRS. Kemampuan fotokatalitik Ag/CuBi2O4 untuk mendegradasi metilen biru dianalisis dengan variasi jenis katalis, variasi massa katalis (5 mg, 10 mg, dan 15 mg), variasi waktu iradiasi, dan variasi kondisi (adsorpsi dan fotolisis). Hasil degradasi metilen biru oleh CuBi2O4 dan Ag/CuBi2O4 dianalisis dengan Spektroskopi UV-Vis. Hasil penelitian menunjukkan bahwa penambahan Ag pada CuBi2O4 meningkatkan aktivitas fotokatalitik. Persentase degradasi metilen biru yang terbesar terjadi pada 10 mg Ag/CuBi2O4 (2:1) yaitu sebesar 82,51% dengan konstanta laju sebesar 9,07 x 10-3 menit-1.

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Synthetic dyes are one of the pollutants in the aquatic environment because they are difficult to decompose and are persistent, so they can inhibit the penetration of sunlight into the water and cause a decrease in photosynthetic activity. Photocatalytic was performed to degrade synthetic dyes using CuBi2O4 which has a band gap energy of 1.75 eV. However, recombination of the e-/h+ pair on CuBi2O4 can occur due to the narrow band gap and because it has poor charge carrier mobility. In order to reduce the recombination of e-/h+ pairs in CuBi2O4, Ag was added so that the efficiency of photocatalytic degradation increased. CuBi2O4 was synthesized by the solvothermal method while Ag/CuBi2O4 was synthesized by the precipitation-reduction method with the mole ratio of Ag:CuBi2O4 precursors (1:1), (2:1), and (1:2). The CuBi2O4 and Ag/CuBi2O4 nanocomposites produced were characterized by XRD, TEM, FTIR, and UV-Vis DRS. The photocatalytic ability of Ag/CuBi2O4 nanocomposites in degrading methylene blue was analyzed with various catalyst types, catalyst mass variations (5 mg, 10 mg, and 15 mg), irradiation time variations, and conditions variations (adsorption and photolysis). Degradation results of methylene blue by CuBi2O4 and Ag/CuBi2O4 were analyzed by UV-Vis spectroscopy. The results showed that the addition of Ag into CuBi2O4 increased the photocatalytic activity. The greatest percentage of methylene blue degradation occurred at 10 mg Ag/CuBi2O4 (2:1) which was 82,51% with a rate constant of 9.07 x 10-3 min-1."

"Perkembangan metode sintesis nanopartikel merupakan salah satu bidang yang menarik minat banyak peneliti. Salah satunya metode antarfasa cair-cair. Sintesis ini dilakukan dengan pendekatan yang ramah lingkungan karena memanfaatkan ekstrak tanaman. Daun kelor merupakan salah satu tanaman yang memiliki metabolid sekunder. Penelitian ini bertujuan untuk mensisntesis nanokomposit ZnO-Co3O4 menggunakan ekstrak daun kelor Moringa oliefera dari sistem duafasa heksana ndash;air dan aktivitas fotodegredasi Methylene Blue. Nanokomposit ZnO-Co3O4 hasil sintesis selanjutnya dikarakterisasi menggunakan UV-Vis-DRS, Spektrofotometer FTIR, TEM, SEM-EDX, XRD dan PSA untuk mngetahui morfologi dan struktur kristal dari nanokomposit tersebut. Nilai band-gap nanokomposit ZnO-Co3O4 sebesar 2,3 eV dengan distribusi ukuran partikel sekitar 86,98 nm dengan pengukuran PSA. Morfologi menggunakan SEM memperlihatkan bulatan kecil-kecil. Pada bilangan gelombang 479,9; 591,0; dan 675,0 cm-1 dari spectra FTIR memperlihatkan vibrasi Zn-O, Co-O menandakan terbentuknya nanokomposit ZnO-Co3O4. ZnO-Co3O4 aktivitas fotodegradasi terhadap MB di bawah sinar visible sebesar 99,0 selama 120 menit.

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The development of nanoparticle synthesis method is one of the fields that attract many researchers. One of them is liquid liquid phase method.This method is friendly in environmental because it uses plant extract. Moringa leaf is one of the plants that has secondary metabolite. This study aims to synthesize ZnO Co3O4 nanocomposites using Moringa oliefera leaf extract from hexane water two phases system and photodegredation activity of Methylene Blue. The synthesis of ZnO Co3O4 nanocomposites are further characterized using UV Vis DRS, FTIR Spectrophotometer, TEM, SEM EDX, XRD and PSA to determine the morphology and crystal structure of the nanocomposite. The ZnO Co3O4 nanocomposite band gap value is 2.3 eV with a particle size distribution about 86.98 nm using PSA. The morphology of nanocomposite shows small spheres. The FTIR spectra exhibites vibration Zn O, Co O signaling the formation of ZnO Co3O4 nanocomposites at wave number 479.9 591.0 and 675,0 cm 1 respectively. ZnO Co3O4 photodegradation activity against methylene blue under visible light is 99.0 for 120 minutes."

"Nanokomposit TiO2/CuO dengan variasi rasio Cu/Ti disusun menggunakan metode sol-gel. Sampel komposit dikarakterisasi dengan X-Ray Diffraction, Energy Dispersive X-Ray Spectroscopy, Field Emission Scaning, Brunauer-Emmett-Teller, UV-Visible Diffuse Reflectance Spectroscopy dan Electronic Spin Resonance Spectroscopy. Methylene blue digunakan sebagai model pewarna tekstil untuk mengevaluasi fotokatalitik, sonokatalitik dan fotosonokatalitik. Difraksi sinar-X dan dispersif energi analisis X-ray menegaskan bahwa hanya struktur monoklinik CuO dan struktur anatase TiO2 yang muncul di nanokomposit TiO2/CuO. Degradasi methylene blue menunjukkan bahwa penggabungan CuO di nanokomposit TiO2/CuO menunjukkan aktivitas fotokatalitik yang cukup tinggi, dan energi cahaya yang dapat dimanfaatkan lebih banyak dibandingkan TiO2 murni. Selain itu, degradasi methylene blue juga diselidiki menggunakan sistem sonokatalisis dan sistem fotosonokatalisis. Hasil penelitian menunjukkan bahwa semua data eksperimen mengikuti model pseudo-first order tapi laju konstanta fotosonokatalisis lebih tinggi dari proses fotokatalisis dan sonokatalisis individu masing-masing. Selain itu, kegiatan fotokatalitik, sonokatalitik dan fotosonokatalitik akan berkaitan dengan sifat struktural dan optik sampel. Mekanisme kegiatan katalitik akan dibahas.

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TiO2/CuO nanocomposite with different Cu/Ti ratios were prepared using sol-gel method. The obtained composite samples were characterized with X-Ray Diffraction, Energy Dispersive X-Ray Spectroscopy, Field Emission Scaning, Brunauer-Emmett-Teller, UV-Visible Diffuse Reflectance Spectroscopy and Electronic Spin Resonance Spectroscopy. Methylene blue was used as a model of textile dye to evaluate their photocatalytic, sonocatalytic and photosonocatalytic activities. X-ray diffraction and energy dispersive X-ray analysis confirmed that only monoclinic CuO and anatase TiO2 structures are present in TiO2/CuO nanocomposites. The degradation of methylene blue indicated that the incorporation of CuO in TiO2/CuO nanocomposite exhibited an appreciable higher photocatalytic activity, and more light energy could be utilized than pure TiO2. In addition, the degradation of methylene blue was also investigated using sonocatalysis and photosonocatalysis systems. The results showed that all experimental data followed the pseudo-first order model but the rate constant of the sonophotocatalysis is higher than the respective individual photocatalysis and sonocatalysis process. Furthermore, the photocatalytic, sonocatalytic and photosonocatalytic activities will be related to their structural and optical properties. The mechanism of catalytic activities will be discussed."

"Green Synthesis Nanokomposit ZnO-CuO menggunakan ekstrak kulit biji Theobroma Cacao L dan uji aktivitas fotodegradasi zat warna metilen biru Abstract. Metode ramah lingkungan yaitu green synthesis of ZnO menggunakan ekstrak kulit biji coklat telah ditemukan. Percobaan tersebut menggunakan precursor Zn NO3 2 dan Cu NO3 2. TCL adalah bahan utama pengganti NaOH, yang terkandung dalam alkaloid yang memiliki kemampuan menghidrolisis melepaskan OH-. Persiapan dari ZnO bergantung pada rasio dari konsentrasi OH-/Cu2 . Identifikasi zat aktif pada ekstrak kulit biji coklat dapat dilakukan dengan menggunakan uji fitokimia. Green sintesis ZnO-CuO dikarakterisasi menggunakan UV-Vis DRS spectrophotometer, Fourier-transform infrared FT-IR spectroscopy, scanning electron microscopy-energy dispersive X-ray Spectroscopy SEM-EDS and X-ray diffraction analysis XRD.

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Name Taufik hidayatProgram Study Undergraduate Program Departement of ChemistryTitle Green Synthesis Nanocomposite ZnO CuO using Theobroma Cacao L Seed Extract and Fotodegradation Activity Test of Methylene Blue Abstract. Eco friendly method for green synthesis of ZnO using leaf extract of Theobroma cacao L was reported. It uses Zn NO3 2 and Cu NO3 2 precursor as raw material. TCL is as source of base to replace NaOH, due to contains alkaloid which has ability for hydrolyzing to release OH . Preparation of ZnO depends on the ratio of OH Cu2 concentrations. Identification of active compounds in leaf extract was obtained by phytochemical analysis. The green synthesis ZnO CuO was characterized by UV Vis DRS spectrophotometer, Fourier transform infrared FT IR spectroscopy, scanning electron microscopy energy dispersive X ray Spectroscopy SEM EDS and X ray diffraction analysis XRD."

"Industri tekstil merupakan penyumbang terbesar limbah zat warna ke dalam air, contohnya zat warna metilen biru yang bersifat racun, karsinogenik, dan tidak dapat terurai secara alami. Salah satu teknik mengurangi kadar metilen biru adalah melalui degradasi secara fotokatalitik dengan menggunakan semikonduktor. CuBi2O4 merupakan semikonduktor tipe-p dengan celah pita yang sempit (1,5 – 1,8 eV) dapat digunakan sebagai fotokatalis untuk degradasi metilen biru karena memiliki respon cahaya tampak. Penambahan logam mulia Paladium (Pd) dapat meningkatkan kinerja aktivitas fotokatalitik CuBi2O4 karena dapat menekan rekombinasi pasangan e− dan h+. Penelitian ini, telah berhasil mensintesis CuBi2O4 melalui metode solvotermal, dan mensintesis nanokomposit Pd/CuBi2O4 dengan variasi perbandingan rasio mol Pd:CuBi2O4 (1:1, 1:2, dan 2:1) melalui metode presipitasi dan reduksi. CuBi2O4 dan Pd/CuBi2O4 hasil sintesis telah dibuktikan melalui karakterisasi dengan XRD, TEM, FTIR, dan UV-Vis DRS. Uji sifat katalis dilakukan pada larutan Metilen Biru dengan variasi penambahan massa katalis sebesar 5 mg, 10 mg, dan 15 mg, serta variasi kondisi (fotolisis dan adsorpsi). Persentase degradasi metilen biru paling optimum adalah pada katalis Pd/CuBi2O4 (2:1) 10 mg, yaitu sebesar 82,63% dengan laju degradasi 8,9 × 10-3 min-1.

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Textile industry is the largest contributor of colorant waste into water, for instance, the toxic, carcinogenic, and non-biodegradable dye methylene blue. One of the techniques to reduce the concentration of methylene blue is through photocatalytic degradation using a semiconductor. CuBi2O4 is a p-type semiconductor with a narrow bandgap (1.5 - 1.8 eV) that can be utilized as a photocatalyst for methylene blue degradation due to its visible light response. The addition of the noble metal Palladium (Pd) can enhance the photocatalytic activity of CuBi2O4 by suppressing the recombination of electron-hole pairs (e− dan h+). In this research, CuBi2O4 has been successfully synthesized through the solvothermal method, and Pd/CuBi2O4 nanocomposites have been synthesized with various ratios of Pd:CuBi2O4 (1:1, 1:2, and 2:1) using the precipitation and reduction method. CuBi2O4 and Pd/CuBi2O4 synthesized products have been characterized using XRD, TEM, FTIR, and UV-Vis DRS. The catalytic properties test was performed on Methylene Blue solutions with varying catalyst masses of 5 mg, 10 mg, and 15 mg, as well as different conditions (photolysis and adsorption). The optimum percentage of methylene blue degradation was observed with the catalyst Pd/CuBi2O4 (2:1) 10 mg, which was 82.63%, with a degradation rate of 8,9 × 10-3 min-1."

"Nanopartikel oksida seng (ZnO) yang diberi dopan kromium (Cr) dan penambahan 10 % montmorillonite (MMT) disintesis dengan metode kopresipitasi untuk empat variasi persen atom Cr. Nanopartikel dikarakterisasi menggunakan X-Ray Diffraction (XRD), Energy Dispersive X-Ray (EDX), Fourier Transform Infrared (FTIR), UV-Visible Diffuse Reflectance (UV-Vis) dan Electronic Spin Resonance (ESR). Pengujian aktivitas fotokatalitik dilakukan menggunakan model polutan methylene blue dengan paparan sinar UV. Penambahan montmorillonite dan dopan Cr pada ZnO dapat meningkatkan degradasi methylene blue dengan Cr doped ZnO/MMT 10 at.% menunjukkan degradasi maksimum dengan kondisi optimum dosis fotokatalis 0.7 g/L dan konsenstrasi larutan 20 mg/L. Spesies dominan pada aktivitas fotokatalitik adalah hole dan OH● berturut-turut.

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Chromium (Cr) doped zinc oxide (ZnO) nanoparticles with 10% montmorillonite (MMT) addition were synthesized by co-precipitation method for four chrome atomic percentage variations. Samples were characterized by X-Ray Diffraction (XRD), Energy Dispersive X-Ray (EDX), Fourier Transform Infrared (FTIR), UV-Visible Diffuse Reflectance (UV-Vis) and Electronic Spin Resonance (ESR). Photocatalytic were evaluated using methylene blue under UV light irradiation. MMT addition and Cr dopant to ZnO nanoparticles enhance methylene blue degradation with the optimum conditions are 0.7 g/L of nanoparticle and 20 mg/L of methylene blue initial concentration. Hole and OH● were identified as dominant species of photocatalytic activity."

"Pada penelitian ini nanokomposit Natrium Alginat-Bentonite-TiO2 telah berhasil disitesis. Hasil sintesis yang diperoleh dilakukan karakterisasi menggunakan FTIR, XRD, SEM, EDX dan TEM untuk mengetahui sifat dari nanokomposit yang diperoleh. Nanokomposit yang telah disintesis memiliki bandgap 3.01 eV dengan distribusi ukuran partikel TiO2 kurang dari 500 nm. Nanokomposit diaplikasikan untuk uji adsorpsi dan fotokatalisis dalam pengurangan limbah zat warna Methylene Blue MB . Persen degradasi yang didapat yaitu sebesar 95,01 dalam kondisi optimum pada pH 8, waktu adsorpsi 30 menit dan massa adsorben 30 mg. Isotherm adsorpsi dari proses yang terjadi mengikuti isotherm Langmuir dengan nilai R2 yaitu 0.971. Untuk proses fotokatalisis, telah dipelajari studi kinetika dimana reaksi yang berjalan mengikuti kinetika orde satu dengan nilai R2 yaitu 0.9420 dan konstanta lanju k sebesar 0.008.

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In this study, sodium alginate Bentonite TiO2 nanocomposite has been successfully synthesized in this study. The synthesis results obtained were characterized using FTIR, XRD, SEM, EDX and TEM to determine the properties of the acquired nanocomposites. The synthesized nanocomposite has a 3.01 ev bandgap with a particle size distribution of TiO2 less than 500 nm. Nanocomposites were applied for the adsorption and photocatalysis tests in the reduction of methylene blue MB dye waste. The percentage of degradation was 95,01 under optimum pH condition of 8, optimal adsorption time of 30 minutes, and the optimal adsorbent mass of 30 mg. The adsorption isotherm of the process that follows Langmuir isotherm with R2 value is 0.971. For the process of photocatalysis, kinetic studies have been studied in which the reaction follows the first order kinetics with the R2 value of 0.9420 and the rate constant k of 0.008."